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What is the formula for Coefficient of viscosity of a liquid?

Posted in FRICTION IN SOLIDS AND LIQUIDS | Email This Post Email This Post |

Coefficient of viscosity of a liquid is defined as the viscous force acting per unit area between two adjacent layers of a liquid with a velocity gradient normal to the direction of flow of the liquid.

The formula for Coefficient of viscosity (η) of a liquid is given as,

Coefficient of viscosity of a liquid

 

where F= viscous force , A = Area , (dv/dx) = velocity gradient

 

η = F / A(dv/dx) .

SI unit of Coefficient of viscosity (η) of liquid is kg m-1 s-1.

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